package com.jt;

import org.junit.jupiter.api.Test;
import sun.reflect.generics.tree.Tree;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

public class A  {
    public static void main(String[] args) {
        HashMap<Integer,String> tree=new HashMap<>();
        tree.put(1, "aaa");
        tree.put(2, "bbb");
        tree.put(16, "fff");
        tree.put(17, "fff");


    }

}
